School-desk



' (No Model.)

J. A. WILSONu SCHOOL DESK.

No. 340,847. Patented Apr.,27, 1886.

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V n l ...mnnllmm M @Kaw/ UNITED STATES PATENT OFFICE.

SCHOOL-DESK.

SEGFECATION forming part of Letters Patent No.

Application filed August 4, 1885.

T0 all whom, zv' may concern,.-

Be it known that I, JosErr-r ALEXANDER VILsON, of Hood River, in the county of Vasco aud State of Oregon, have invented a new and useful Improvement in SchoolDesks, of which the following is a description.

My invention is an improvement in the speA cial class ot' school and other desks having covers which may be raised and secured at any desired angle to their original position, for the purpose of adapting them for more convenient use in reading, writing, drawing, die.

rlhe improvement pertains to the construction and combination of parts employed for holding the cover raised, and to devices for clamping a book or drawing, &e., thereto, as hereinafter described and claimed.

The aceompanyi ng drawing represents a perspective View of a schooldesk provided with my improvement.

The iron sides Aare extended backward, as shown at g, and connected at that point by a narrow wooden cross piece or strip, a. The cover or lid B is attached by hinges c to this part a. To the under side of the cover B, and near its free edge, is atta chcd a bar, O, which is curved eccentrically to the hinge'poiut f, and (when the cover is down) projects through a slot in the bottom of the desk. Itis apparent that if the said bar were curved coneentrieall y its free end would project farther below the desk, (when the cover is closed.) and thus unduly obstruct the space beneath it, which should be as open as possible to permit free movement of the pupils legs and feet- To the bottom and front of the desk are secured the respective ends of a right-angular bar, D, whose horizontal portion is slotted, as

340,847, dated April 27,1886.

Serial No. 173,4914 (No model.)

shown. A clamp-screw, E, passes through the slots of both bars C D. Vhen loosened,

it allows the cover B to be raised and lowered without hinderance; but when tightened it clamps the movable bar C firmly to the xed bar I), and thereby holds the cover supported at the required angle for convenient use in reading or writing, Sac.

The screw E obviously moves upward or downward in the slot of curved bar O and along` the horizontal slot of bar D whenever the cover is adjusted.

To hold a book open on the cover B, I use clampsf, which pass through holes in the latter, and have spiral springs applied to their shanks. rlhe springs press downward against the nuts en the extremities of the clamps and upward against the under side of the cover. The upper ends ofthe elampsf are bent at a right angle, and lie ilush in grooves formed in the cover when the clamps are not in use.

Vhat I claim is- 1. In a desk, the combination, with the hinged cover, of the curved slotted bar attached to its under side, the fixed bar secured to the body of the desk and having a slot in its horizontal portion, and a clamp Screw working in the slots of both bars, as shown and described, for the purpose specified.

2. The combination, with a booksupport, of angular clamps which pass through the latter and springs applied to their shanks on the inner side et' the support, substantially as shown and described.

JOSEPH ALEXANDER XVILSON.

Vitnessos:

JimrEs LowEY, GEORGE PAvsoN CEOWELL. 

